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  • Users: kepharda
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  1. kepharda

    Blending into Pipeline

    I have a client who is going to blend biodiesel into ULSD at the Pipeline. They want to blend to make B5 and send it along the pipeline. I am not totally responsible for the design of this area, however, I am designing the pumps/piping up to the pipeline tie in. So far I have zero information...
  2. kepharda

    Software solutions

    My problem involves a fuel transfer pump. Each time my client first turns it on (1-2 times a week) to pump fuel from the holding tank to his truck loading rack, the pump creates a pressure surge which is breaking piping mounts. The pipe is visibly moving 6-12 inches depending on the location...
  3. kepharda

    Resource Suggestion

    I am designing a Chemical Process Reactor, I was wondering if anyone could suggest a good reference book regarding Materials Selection. The substances involved are Ammonia and Flourides. thanks, -dave
  4. kepharda

    When to use Sanitary/Food Grade Piping

    I am starting a project on a chemical plant in Washington and I have been told some of the product may be used as a food additive. My question is this: Can anyone direct me to the Spec. that will tell me if or when Food Grade piping and vessels will be required. Any helpful responses or advice...
  5. kepharda

    HVAC Chiller Plant

    Hello, I have a new project to install some Water Cooled Chillers for an HVAC project. This is my first HVAC Chiller install. Previously I have installed Chillers, but for Process Systems. I was wondering if anyone could offer advice or tips to ease the install. I will be working with a...
  6. kepharda

    Alum Piping

    Anyone ever used welded Aluminum Tubing? My customer has told me he doesn't want to use Stainless or Carbon Steel Pipe to connect a Blower to the Dust Filter, he wants to use Aluminum (4 in.). Anyone have any suggestions/tips on this? I haven't used Alum OD Tubing so I am a little unsure of...
  7. kepharda

    Convincing your Boss

    So here is the problem I have today. I am a Mechanical Engineer with about 5 years experience working for a consulting firm. Recently I oversaw the drawing for a installation of the HVAC Duct and fittings for a customer. We brought in a outside consultant to perform the calcs. as I nor anyone...
  8. kepharda

    Compressed Air Piping-Material?

    I am working on the piping design for a small production facility. The Process Engr. who is in Switz. constantly suggests to the manager to do things that may work, but are not in my mind very prudent. The latest is that he wishes to utilize Carbon Steel pipe for an Instrument Air Piping...
  9. kepharda

    Equipment with Metric Flanges.

    I am trying to design some pipework and a customer has specified 2 explosion safety valves that originated in Europe. The piping spec calls for class 150 flanges, but the bolt hole diameter of these 2 safety valves is 11 5/8" and 24 7/16" respectively, so a standard ANSI bolt pattern is not...
  10. kepharda

    carbon steel vs stainless steel pipe

    I am piping cooling tower water supply (600 gallons per minute) header. Supply and return will be about 100 ft. long. I can get sch 10s Stainless Steel for about $59 per foot. Customer intially wanted me to investigate CPVC, but it would require a larger pipe to keep velocities down and sch...

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